For the longest valley under Triglav, start off in Mojstrana which you reach by following the already mentioned cycling track on the former disused railway line connecting Kranjska Gora and Jesenice. In Mojstrana, take the road towards Bled where you can also get by bike if you are fit enough. But bear in mind the way back afterwards.
On the Kosmač pass, the road branches off into another one of the three valleys – the Kot Valley. However, the cycling path leads just through the woods which are not likely to be that much interesting.
Go on to the next pass where the road branches off left to the Radovna Valley through which you can get to Bled. There are some scattered farms in the area of the Upper Radovna Valley where you can take the way back later on.
Continue towards Krma which winds between the mountain walls. Either in the Vrata Valley or here you cannot get to the very end by bike. Your stop is on the Zasip pasture (Zasipska planina) –with a mountain hut, offering refreshments to many hikers and mountaineers who take this path when starting off thier mountain tours.